CN113637376B - Building waterproof coating and preparation method thereof - Google Patents
Building waterproof coating and preparation method thereof Download PDFInfo
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- CN113637376B CN113637376B CN202111073692.9A CN202111073692A CN113637376B CN 113637376 B CN113637376 B CN 113637376B CN 202111073692 A CN202111073692 A CN 202111073692A CN 113637376 B CN113637376 B CN 113637376B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
- C09D7/69—Particle size larger than 1000 nm
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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Abstract
The invention relates to the technical field of coatings, in particular to a building waterproof coating and a preparation method thereof. The building waterproof coating is prepared from the following raw materials in parts by weight: 30-40 parts of acrylic emulsion; 40-50 parts of composite filler particles; 1-5 parts of a film-forming assistant; 1-5 parts of high-toughness polymer material; 5-10 parts of mica powder; 0.1-1 part of defoaming agent; 0.1-1 part of a dispersant; 0.01 to 0.03 portion of mildew-proof bactericide; 0.1-1 part of thickening agent; 0.1-1 part of a leveling agent; 0.1-0.5 part of color paste; 5-20 parts of water; the composite filler particles comprise basalt sand with the particle size of 10-20 meshes, dolomite with the particle size of 24-40 meshes and waste rubber particles with the particle size of 60-160 meshes. The invention adopts the synergistic effect of multistage composite filler particles with specific particle size and other components, so that the obtained waterproof building coating has excellent mechanical property, aging resistance and water resistance.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a building waterproof coating and a preparation method thereof.
Background
The building waterproof paint mainly comprises polyurethane waterproof paint, polymer cement-based waterproof paint, polymer waterproof paint and the like, wherein the polyurethane waterproof paint is generally prepared by taking polyurethane and asphalt or coal tar as raw materials, has certain toxicity, can release volatile benzene solvents in the construction process to generate decoration pollution, and has poor bonding performance with a base material and difficult construction. The polymer cement-based waterproof coating is a bi-component waterproof coating compounded by liquid materials and matched powder materials, wherein the liquid materials are formed by combining high-molecular polymer emulsion such as polyacrylate, polyvinyl acetate, styrene butadiene rubber emulsion and various additives, the polymer cement-based waterproof coating enables inorganic components and organic components to be mutually combined and have complementary advantages, the comprehensive performance is superior, and a better waterproof effect can be achieved.
The polymer emulsion waterproof coating is a thick coating material formed by combining high-molecular polymer emulsion, such as polyacrylate emulsion, polyvinyl acetate emulsion, styrene butadiene rubber emulsion and other polymer emulsions, inorganic filler and various additives, is a single component, does not need to be stirred on site, has the characteristics of high coating elongation, strong adaptability to base shrinkage and deformation cracking, no toxicity, no harm and the like, belongs to a green environment-friendly water-based emulsion product, and is a new direction for development of waterproof coatings. However, the existing polymer waterproof coating still has some defects, such as relatively high cost, poor weather resistance, easy occurrence of exposed bottom in the construction process, and the like.
Disclosure of Invention
In view of this, the technical problem to be solved by the present invention is to provide a waterproof building coating and a preparation method thereof, wherein a waterproof film layer obtained by the waterproof building coating provided by the present invention has excellent mechanical properties, aging resistance and water resistance.
The invention provides a building waterproof coating which is prepared from the following raw materials in parts by weight:
the composite filler particles comprise basalt sand, dolomite and waste rubber particles;
the particle size of the basalt sand is 10-20 meshes;
the grain size of the dolomite is 24-40 meshes;
the particle size of the waste rubber particles is 60-160 meshes.
Preferably, the acrylic emulsion comprises at least one of a styrene-acrylic emulsion, a pure acrylic emulsion and a silicone-acrylic emulsion.
Preferably, the mass ratio of the wuyan sand to the dolomite to the waste rubber particles is 2.5-4: 1.5-2.5: 0.5 to 1.5.
Preferably, the coalescent includes at least one of dipropylene glycol butyl ether, dipropylene glycol methyl ether, and propylene glycol monomethyl ether acetate.
Preferably, the high-toughness polymer material includes at least one of polyester fiber, wood fiber and polytetrafluoroethylene powder.
Preferably, the particle size of the mica powder is larger than 1250 meshes.
Preferably, the defoamer comprises a silicone defoamer;
the dispersant comprises sodium hexametaphosphate;
the mildew-proof bactericide comprises a nano-silver bactericide.
Preferably, the thickener comprises fumed silica;
the leveling agent comprises BYK306;
the color paste is titanium dioxide color paste;
the water is deionized water.
The invention also provides a preparation method of the building waterproof coating, which comprises the following steps:
a) Mixing water, acrylic emulsion, a film-forming assistant, a dispersing agent, a flatting agent, color paste and a mildew-proof bactericide, and stirring to obtain a first mixture;
b) Mixing the first mixture, mica powder and a high-toughness polymer material, and stirring to obtain a second mixture;
c) Mixing and stirring the second mixture, the waste rubber particles, the dolomite and the basalt sand to obtain a third mixture;
d) Mixing the third mixture with a thickener to obtain a fourth mixture;
e) And mixing the fourth mixture with a defoaming agent, and stirring to obtain the building waterproof coating.
Preferably, in the step A), the rotation speed of the stirring is 500-600 r/min, and the time is 25-35 min;
in the step B), the rotating speed of stirring is 300-500 r/min, and the time is 25-35 min;
in the step C), the stirring speed is 300-500 r/min, and the stirring time is 25-35 min;
in the step E), the rotating speed of stirring is 100-200 r/min, and the time is 8-12 min.
The invention provides a building waterproof coating which is prepared from the following raw materials in parts by weight: 30-40 parts of acrylic emulsion; 40-50 parts of composite filler particles; 1-5 parts of a film-forming assistant; 1-5 parts of high-toughness polymer material; 5-10 parts of mica powder; 0.1-1 part of defoaming agent; 0.1-1 part of a dispersant; 0.01 to 0.03 portion of mildew-proof bactericide; 0.1-1 part of thickening agent; 0.1-1 part of a leveling agent; 0.1-0.5 part of color paste; 5-20 parts of water; the composite filler particles comprise basalt sand, dolomite and waste rubber particles; the particle size of the basalt sand is 10-20 meshes; the grain size of the dolomite is 24-40 meshes; the particle size of the waste rubber particles is 60-160 meshes. The invention adopts multistage-matched large-particle-size composite filler particles as fillers, three fillers with different particle sizes are matched with each other, basalt sand is used as a framework, dolomite is used as an auxiliary filling raw material and is filled in gaps of the basalt sand, waste rubber particles are used as a secondary filling raw material and are filled in gaps formed by combining the basalt sand and the dolomite, and the compact packing density can be obtained through the matching of the three filler particles, so that the high filling fraction of the fillers is realized. The invention adopts the synergistic effect of the multistage matched composite filler particles with specific particle size and other components, so that the obtained building waterproof coating has better mechanical property, aging resistance and water resistance, is more wear-resistant, has large minimum coating thickness and is not easy to expose bottom.
Experimental results show that the tensile strength of the waterproof film layer obtained by the building waterproof coating is not lower than 2.2MPa; the aging resistance of a waterproof film layer obtained by the building waterproof paint is detected according to the standard GB/T9755-2014, and the waterproof film layer does not bubble, does not fall off and has no cracks within 400 hours; and the water resistance of the waterproof film layer obtained by the building waterproof paint is detected according to the standard GB/T9755-2014, and no foaming or falling is caused in 96 hours.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a building waterproof coating which is prepared from the following raw materials in parts by weight:
the composite filler particles comprise basalt sand, dolomite and waste rubber particles;
the particle size of the basalt sand is 10-20 meshes;
the grain size of the dolomite is 24-40 meshes;
the particle size of the waste rubber particles is 60-160 meshes.
The raw materials for preparing the building waterproof coating comprise acrylic emulsion. The weight portion of the acrylic emulsion is 30-40. In certain embodiments of the present invention, the acrylic emulsion is 30 parts, 35 parts, or 40 parts by weight.
In certain embodiments of the present invention, the acrylic emulsion comprises at least one of a styrene-acrylic emulsion, a acrylic emulsion, and a silicone-acrylic emulsion.
The raw materials for preparing the building waterproof coating also comprise composite filler particles. The weight portion of the composite filler particles is 40-50 portions. In certain embodiments of the present invention, the weight fraction of the composite filler particles is 40 parts, 45 parts, or 50 parts.
In certain embodiments of the present invention, the basalt sand has a particle size of 12 to 16 mesh. In certain embodiments, the dolomite has a particle size of 28 to 35 mesh. In some embodiments, the waste rubber particles have a particle size of 70 to 140 mesh. The source of the waste rubber particles is not particularly limited in the present invention, and may be generally commercially available.
In some embodiments of the invention, the mass ratio of the wuyan sand to the dolomite to the waste rubber particles is 2.5-4: 1.5-2.5: 0.5 to 1.5. In certain embodiments, the weight ratio of wuyan sand, dolomite and waste rubber particles is 3:2:1 or 2.5:1.5:1.
the preparation raw materials of the building waterproof coating also comprise a film-forming additive. The film-forming assistant is 1-5 parts by weight. In certain embodiments of the present invention, the film-forming aid is present in an amount of 2 parts, 3 parts, or 4 parts by weight.
In certain embodiments of the present invention, the coalescent includes at least one of dipropylene glycol butyl ether, dipropylene glycol methyl ether, and propylene glycol monomethyl ether acetate.
The raw materials for preparing the building waterproof coating also comprise a high-toughness polymer material. The weight portion of the high-toughness polymer material is 1-5 portions. In certain embodiments, the high tenacity polymeric material is 3 parts by weight.
In certain embodiments of the present invention, the high-tenacity polymeric material comprises at least one of polyester fibers, wood fibers, and polytetrafluoroethylene powder.
The preparation raw materials of the building waterproof coating also comprise mica powder. The mica powder accounts for 5-10 parts by weight. In certain embodiments of the present invention, the mica powder is 7 parts by weight.
In certain embodiments of the present invention, the particle size of the mica powder is greater than 1250 mesh.
The raw materials for preparing the building waterproof coating also comprise a defoaming agent. The weight portion of the defoaming agent is 0.1-1. In certain embodiments of the present invention, the defoamer is present in an amount of 0.2 parts by weight.
In certain embodiments of the present invention, the defoamer comprises a silicone defoamer.
The raw materials for preparing the building waterproof coating also comprise a dispersing agent. The weight portion of the dispersant is 0.1 to 1 portion. In certain embodiments of the present invention, the dispersant is present in an amount of 0.2 parts by weight.
In certain embodiments of the invention, the dispersant comprises sodium hexametaphosphate.
The raw materials for preparing the building waterproof coating also comprise a mildew-proof bactericide. The weight portion of the mildew-proof bactericide is 0.01-0.03. In certain embodiments of the present invention, the weight portion of the mildewcide is 0.01 part.
In certain embodiments of the present invention, the mildew-resistant germicide comprises a nano-silver germicide.
The raw materials for preparing the building waterproof coating also comprise a thickening agent. The weight portion of the thickening agent is 0.1-1. In certain embodiments of the present invention, the thickener is present in an amount of 0.2 parts by weight.
In certain embodiments of the present disclosure, the thickener comprises fumed silica.
The preparation raw materials of the building waterproof coating also comprise a leveling agent. The weight portion of the flatting agent is 0.1-1. In certain embodiments of the present invention, the weight part of the leveling agent is 0.2 parts.
In certain embodiments of the present invention, the leveling agent comprises BYK306.
The raw materials for preparing the building waterproof coating also comprise color paste. The color paste is 0.1 to 0.5 weight portion. In some embodiments of the present invention, the color paste is 0.1 part by weight.
In some embodiments of the present invention, the color paste is a titanium dioxide color paste.
The raw materials for preparing the building waterproof coating also comprise water. The weight portion of the water is 5 to 20 portions. In certain embodiments of the present invention, the water is present in an amount of 7.09, 6.09, or 5.09 parts by weight.
In certain embodiments of the present invention, the water is deionized water.
The invention also provides a preparation method of the building waterproof coating, which comprises the following steps:
a) Mixing water, acrylic emulsion, a film-forming assistant, a dispersing agent, a flatting agent, color paste and a mildew-proof bactericide, and stirring to obtain a first mixture;
b) Mixing the first mixture, mica powder and a high-toughness polymer material, and stirring to obtain a second mixture;
c) Mixing and stirring the second mixture, the waste rubber particles, the dolomite and the basalt sand to obtain a third mixture;
d) Mixing the third mixture with a thickener to obtain a fourth mixture;
e) And mixing the fourth mixture with a defoaming agent, and stirring to obtain the building waterproof coating.
In the preparation method of the building waterproof coating provided by the invention, the adopted raw material components and the proportion are the same as above, and are not described again.
The method comprises the steps of mixing water, acrylic emulsion, a film-forming aid, a dispersing agent, a flatting agent, color paste and a mildew-proof bactericide, and stirring to obtain a first mixture.
Specifically, it preferably includes:
adding the acrylic emulsion, the film-forming assistant, the dispersing agent and the mildew-proof bactericide into water in sequence, and stirring to obtain a first mixture.
In some embodiments of the invention, the stirring speed is 500-600 r/min and the time is 25-35 min. In certain embodiments, the rotational speed of the agitation is 550r/min. In certain embodiments, the time of stirring is 30min.
After the first mixture is obtained, the first mixture, the mica powder and the high-toughness polymer material are mixed and stirred to obtain a second mixture.
Specifically, it preferably includes:
and adding mica powder and a high-toughness polymer material into the stirred first mixture, and stirring to obtain a second mixture.
In certain embodiments of the invention, the first mixture is stirred at a speed of 500 to 600r/min. In certain embodiments, the first mixture is stirred at a speed of 500r/min.
In some embodiments of the invention, after the mica powder and the high-toughness polymer material are added, the stirring speed is 300-500 r/min, and the stirring time is 25-35 min. In certain embodiments, the rotational speed of the agitation is 400r/min. In certain embodiments, the time of stirring is 30min. In certain embodiments of the invention, the manner of addition may be a slow addition.
And after a second mixture is obtained, mixing the second mixture, the waste rubber particles, the dolomite and the basalt sand, and stirring to obtain a third mixture.
Specifically, it preferably includes:
and sequentially adding waste rubber particles, dolomite and basalt sand into the second mixture, and stirring to obtain a third mixture.
In some embodiments of the invention, the stirring speed is 300-500 r/min and the time is 25-35 min. In certain embodiments, the rotational speed of the agitation is 400r/min. In certain embodiments, the time of stirring is 30min.
After a third mixture is obtained, the third mixture is mixed with a thickener to obtain a fourth mixture.
Specifically, it preferably includes:
adding a thickening agent to the third mixture to obtain a fourth mixture.
And after a fourth mixture is obtained, mixing the fourth mixture with a defoaming agent, and stirring to obtain the building waterproof coating.
Specifically, it preferably includes:
and adding a defoaming agent into the fourth mixture, and stirring to obtain the building waterproof coating.
In some embodiments of the invention, the stirring speed is 100-200 r/min, and the time is 8-12 min. In certain embodiments, the rotational speed of the agitation is 150r/min. In certain embodiments, the time of stirring is 10min. The stirring process is the process of removing bubbles in the coating.
The source of the above-mentioned raw materials is not particularly limited, and the raw materials may be generally commercially available.
In the invention, the basalt sand has very high hardness, is wear-resistant and strong in pressure resistance, can play a strong supporting role on a waterproof film layer as a framework material, and ensures the strength and the wear resistance of the film layer, the strength and the hardness of dolomite are relatively low, the dolomite can be used as an auxiliary filling raw material and can be better filled into gaps of the basalt sand, the waste rubber particles have better elasticity, and the waste rubber particles can be used as a secondary filling raw material and can be better filled into the gaps, and meanwhile, the flexibility of the film layer can be improved; meanwhile, after the large-particle-size composite filler is added, the minimum coating thickness of the film layer can be increased, and the bottom exposure phenomenon can be effectively prevented in the construction process.
In the prior art, a small-particle-size inorganic material is mostly adopted as a filler, the filling effect is poor, the invention adopts multistage-matched large-particle-size composite filler particles as the filler, three fillers with different particle sizes are matched with each other, basalt sand is used as a framework, dolomite is used as an auxiliary filling raw material and is filled in gaps of the basalt sand, waste rubber particles are used as a secondary filling raw material and are filled in gaps formed by combining the basalt sand and the dolomite, and the compact packing density can be obtained through the matching of the three filler particles, so that the high filling fraction of the filler is realized. The invention adopts the synergistic effect of the multistage matched composite filler particles with specific particle size and other components, so that the obtained building waterproof coating has better mechanical property, aging resistance and water resistance, is more wear-resistant, has large minimum coating thickness and is not easy to expose bottom.
Under the same condition and the same dosage, the smaller the filler particles, the larger the specific surface area, and the larger the dosage of the emulsion required for completely coating the filler, the composite filler particles of the invention can reduce the dosage of the emulsion, the emulsion cost accounts for the majority of all raw material costs, and the reduction of the dosage of the emulsion can reduce the cost. Therefore, the building waterproof coating provided by the invention is low in cost, and compared with the prior art, the material cost can be reduced by 20-30% under the condition of using the same amount.
In order to further illustrate the present invention, the following will describe a waterproof building coating and a method for preparing the same in detail with reference to the following examples, which should not be construed as limiting the scope of the present invention.
The starting materials used in the following examples are all commercially available.
Examples 1 to 5 and comparative examples 1 to 2
The preparation method of the building waterproof coating comprises the following steps:
1. adding deionized water into a stirring kettle, sequentially adding acrylic emulsion, a film-forming auxiliary agent, a dispersing agent, a mildew-proof bactericide, a flatting agent and white color paste, starting a stirrer, stirring for 30min, and obtaining a first mixture at the rotation speed of the stirrer of 550 r/min;
2. adding mica powder and a high-toughness polymer material into the stirred first mixture (500 r/min), stirring for 30min, and rotating the stirrer at a speed of 400r/min to obtain a second mixture;
3. sequentially adding waste rubber particles, dolomite and basalt sand into the second mixture, and continuously stirring for 30min at a stirrer rotation speed of 400r/min;
4. adding a thickening agent to the third mixture to obtain a fourth mixture;
5. adding a defoaming agent into the fourth mixture, continuously stirring for 10min at the stirring speed of 150r/min, and removing bubbles in the coating to obtain the building waterproof coating;
the preparation raw materials of the building waterproof coating comprise:
the composite filler particles comprise basalt sand, dolomite and waste rubber particles; the mass ratio of the basalt sand to the dolomite to the waste rubber particles is recorded as a: b: c;
the particle size of the basalt sand is 12-16 meshes; the grain size of the dolomite is 28 to 35 meshes; the particle size of the waste rubber particles is 70-140 meshes;
the color paste is titanium dioxide color paste;
the leveling agent is BYK306;
the dispersant is sodium hexametaphosphate;
the defoaming agent is an organic silicon defoaming agent;
the thickening agent is fumed silica;
the mildew-proof bactericide is a nano-silver bactericide;
the particle size of the mica powder is larger than 1250 meshes;
the components and the proportion of the raw materials for preparing the waterproof building coating are shown in table 1.
TABLE 1 weight parts of components and compounding ratios of raw materials for preparation of waterproof paints for construction of examples 1 to 5 and comparative examples 1 to 2
The results of the performance test of the architectural waterproof coatings of examples 1 to 5 and comparative examples 1 to 2 are shown in table 2.
TABLE 2 results of measuring the Performance of the architectural waterproofing coatings of examples 1 to 5 and comparative examples 1 to 2
Experimental results show that the tensile strength of the waterproof film layer obtained by the building waterproof coating is not lower than 2.2MPa; the aging resistance of the waterproof film layer obtained by the building waterproof coating is detected according to the standard GB/T9755-2014, and the waterproof film layer does not bubble, fall off or crack within 400 hours; and the water resistance of the waterproof film layer obtained by the building waterproof paint is detected according to the standard GB/T9755-2014, and no foaming or falling is caused in 96 hours.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The building waterproof coating is prepared from the following raw materials in parts by weight:
30-40 parts of acrylic emulsion;
40-50 parts of composite filler particles;
1 to 5 parts of a film forming auxiliary agent;
1 to 5 parts of high-toughness polymer material;
5 to 10 parts of mica powder;
0.1 to 1 part of defoaming agent;
0.1 to 1 part of dispersant;
0.01 to 0.03 portion of mildew-proof bactericide;
0.1 to 1 part of thickening agent;
0.1 to 1 part of leveling agent;
0.1 to 0.5 portion of color paste;
5 to 20 parts of water;
the acrylic emulsion comprises at least one of styrene-acrylic emulsion, pure acrylic emulsion and silicone acrylic emulsion;
the composite filler particles consist of basalt sand, dolomite and waste rubber particles;
the particle size of the basalt sand is 10 to 20 meshes;
the grain size of the dolomite is 24 to 40 meshes;
the particle size of the waste rubber particles is 60 to 160 meshes;
the mass ratio of the Wuyan sand to the dolomite to the waste rubber particles is 2.5 to 4:1.5 to 2.5:0.5 to 1.5;
the high-toughness polymer material comprises at least one of polyester fiber, wood fiber and polytetrafluoroethylene powder.
2. The architectural waterproofing coating according to claim 1 wherein the film forming agent comprises at least one of dipropylene glycol butyl ether, dipropylene glycol methyl ether and propylene glycol monomethyl ether acetate.
3. The waterproof building paint of claim 1, wherein the particle size of the mica powder is larger than 1250 mesh.
4. The architectural waterproofing coating according to claim 1, wherein the defoaming agent comprises a silicone defoaming agent;
the dispersant comprises sodium hexametaphosphate;
the mildew-proof bactericide comprises a nano-silver bactericide.
5. The architectural waterproofing coating according to claim 1 wherein the thickener comprises fumed silica;
the leveling agent comprises BYK306;
the color paste is titanium dioxide color paste;
the water is deionized water.
6. A preparation method of the building waterproof coating of any one of claims 1 to 5, comprising the following steps:
a) Mixing water, acrylic emulsion, a film-forming assistant, a dispersing agent, a flatting agent, color paste and a mildew-proof bactericide, and stirring to obtain a first mixture;
b) Mixing the first mixture, mica powder and a high-toughness polymer material, and stirring to obtain a second mixture;
c) Mixing and stirring the second mixture, the waste rubber particles, the dolomite and the basalt sand to obtain a third mixture;
d) Mixing the third mixture with a thickener to obtain a fourth mixture;
e) And mixing the fourth mixture with a defoaming agent, and stirring to obtain the building waterproof coating.
7. The preparation method according to claim 6, wherein in the step A), the rotation speed of stirring is 500 to 600r/min, and the time is 25 to 35min;
in the step B), the rotation speed of stirring is 300-500 r/min, and the time is 25-35 min;
in the step C), the rotation speed of stirring is 300 to 500r/min, and the time is 25 to 35min;
in the step E), the rotation speed of stirring is 100 to 200r/min, and the time is 8 to 12min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111073692.9A CN113637376B (en) | 2021-09-14 | 2021-09-14 | Building waterproof coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111073692.9A CN113637376B (en) | 2021-09-14 | 2021-09-14 | Building waterproof coating and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN113637376A CN113637376A (en) | 2021-11-12 |
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| CN105331220B (en) * | 2015-12-08 | 2017-12-12 | 上海台安实业集团有限公司 | A kind of composite metal roof insulation water-repellent paint and preparation method thereof |
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